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Jack Perkins
Athletics
SP · #50 · Bats R · Throws R · 6'1" · 220 lb · Age 26 · 2 yrs in MLB
2026 grade
4.1
- Runs prevented
- −8.4
- IP · ERA
- 121.0 · 6.10
- K · BB
- 140 · 51
- Rank
- 197 of 205 relievers
What the grade is made of
Runs each part saves or costs against an average pitcher facing the same batters. Contact counts a quarter for how it turned out, because over a season that's mostly the fielders and luck.
- Home runs allowed23 vs 16 avg−9.1
- Strikeouts140 vs 120 avg+5.5
- Contact allowed (how it turned out counts a quarter)316 vs 349 avg−3.3
- Hit batters10 vs 6 avg−1.3
- Walks49 vs 47 avg−0.8
- Parks pitched in+0.7
2026 game log: pitching
Game grades need 3 batters faced; starts are ranked against starts, relief outings against relief outings.
| Game | Result | Dec | IP | H | R | ER | BB | K | HR | PC | Grade |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sat, Sep 26vsHOU | L 2-13 | L | 5.0 | 5 | 6 | 6 | 3 | 9 | 3 | 94 | 13.1 |
| Sun, Sep 20@CLE | L 0-1 | L | 6.0 | 5 | 1 | 1 | 0 | 4 | 0 | 80 | 81.6 |
| Tue, Sep 15@TB | L 1-2 | GS | 6.2 | 4 | 1 | 0 | 1 | 8 | 0 | 83 | 89.3 |
| Tue, Sep 8vsTOR | L 2-4 | L | 5.0 | 7 | 4 | 4 | 0 | 3 | 2 | 85 | 23.6 |
| Thu, Sep 3@SEA | W 7-4 | GS | 3.0 | 4 | 3 | 3 | 5 | 7 | 0 | 86 | 16.2 |
| Sat, Aug 29vsBAL | L 3-5 | L | 5.0 | 4 | 2 | 1 | 4 | 5 | 1 | 80 | 35.0 |
| Sun, Aug 23@HOU | W 7-6 | W | 5.0 | 3 | 3 | 1 | 5 | 6 | 1 | 91 | 67.3 |
| Tue, Aug 18@KC | L 3-4 | 3.2 | 1 | 0 | 0 | 1 | 4 | 0 | 53 | 91.2 | |
| Wed, Aug 12vsTB | L 4-8 | L | 5.0 | 12 | 7 | 6 | 1 | 2 | 1 | 97 | 2.0 |
| Fri, Aug 7@BOS | L 1-13 | L | 3.0 | 5 | 5 | 5 | 3 | 3 | 1 | 70 | 10.5 |
| Sat, Aug 1vsDET | L 6-8 | L | 5.1 | 9 | 6 | 6 | 1 | 9 | 3 | 91 | 7.3 |
| Mon, Jul 27vsBOS | L 2-4 | L | 5.2 | 1 | 2 | 2 | 3 | 4 | 0 | 69 | 86.3 |
| Tue, Jul 21@ARI | L 5-6 | GS | 5.0 | 5 | 3 | 3 | 1 | 4 | 1 | 87 | 49.1 |
| Thu, Jul 9@DET | L 1-4 | L | 3.0 | 2 | 3 | 3 | 2 | 2 | 2 | 67 | 13.3 |
| Fri, Jul 3vsMIA | L 5-12 | L | 3.2 | 7 | 7 | 7 | 4 | 8 | 2 | 91 | 6.4 |
| Sat, Jun 27@LAA | L 2-5 | GS | 5.0 | 4 | 2 | 2 | 1 | 5 | 0 | 81 | 57.9 |
| Sun, Jun 21vsLAA | L 7-9 | GS | 5.0 | 4 | 4 | 4 | 2 | 8 | 1 | 78 | 58.3 |
| Tue, Jun 16vsPIT | L 5-6 | GS | 5.0 | 6 | 3 | 3 | 2 | 6 | 1 | 85 | 30.6 |
| Wed, Jun 10vsMIL | W 4-3 | GS | 4.0 | 5 | 3 | 3 | 3 | 4 | 2 | 89 | 11.0 |
| Fri, Jun 5@HOU | L 1-5 | L | 4.0 | 5 | 5 | 5 | 2 | 6 | 1 | 75 | 23.7 |
| Sun, May 31vsNYY | L 8-13 | 2.1 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 99.2 | |
| Sat, May 30vsNYY | W 6-4 | 0.2 | 1 | 3 | 3 | 2 | 2 | 0 | 24 | 22.0 | |
| Mon, May 25vsSEA | L 2-9 | 4.2 | 3 | 2 | 2 | 0 | 7 | 1 | 63 | 97.7 | |
| Fri, May 22@SD | L 3-7 | 1.1 | 4 | 3 | 3 | 0 | 2 | 0 | 23 | 10.1 | |
| Tue, May 19@LAA | W 14-6 | H | 2.0 | 1 | 0 | 0 | 0 | 0 | 0 | 22 | 62.6 |
| Thu, May 14vsSTL | L 4-5 | L | 0.2 | 3 | 2 | 2 | 0 | 0 | 0 | 23 | 7.0 |
| Wed, May 13vsSTL | W 6-2 | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 18 | 38.4 | |
| Fri, May 8@BAL | W 4-3 | H | 0.2 | 1 | 1 | 1 | 1 | 2 | 0 | 25 | 31.0 |
| Wed, May 6@PHI | L 3-6 | L | 1.1 | 2 | 4 | 2 | 1 | 2 | 0 | 33 | 42.9 |
| Thu, Apr 30vsKC | W 6-3 | S | 1.0 | 1 | 0 | 0 | 0 | 1 | 0 | 16 | 58.6 |
| Tue, Apr 28vsKC | L 1-4 | 1.0 | 0 | 0 | 0 | 0 | 1 | 0 | 12 | 84.3 | |
| Sun, Apr 26@TEX | W 2-1 | S | 2.0 | 1 | 0 | 0 | 0 | 3 | 0 | 26 | 94.3 |
| Tue, Apr 21@SEA | W 5-2 | S | 2.0 | 0 | 0 | 0 | 0 | 2 | 0 | 26 | 97.2 |
| Sat, Apr 18vsCHW | W 7-6 | W | 2.1 | 1 | 0 | 0 | 2 | 3 | 0 | 44 | 60.0 |
| Thu, Apr 16vsTEX | L 6-9 | 1.0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 62.4 | |
| Mon, Apr 13vsTEX | L 1-8 | 1.2 | 5 | 4 | 4 | 1 | 4 | 0 | 43 | 4.3 | |
| Fri, Apr 10@NYM | W 4-0 | W | 2.1 | 3 | 0 | 0 | 0 | 3 | 0 | 30 | 48.2 |
2026 game log: hitting
Game grades need 3 plate appearances.
Scores, box scores and play-by-play from ESPN. The run values and park factors behind the grades were worked out from Retrosheet's play-by-play: the information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.